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<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Function</title>

    <!-- 使用 script 元素嵌入 JavaScript 代码 -->
    <script>
        let analyse = function( instance ) {

            let names = Object.getOwnPropertyNames( instance );

            for( let i = 0 ; i < names.length ; i++ ){
                let name = names[ i ] ;
                console.log( name );
            }

        }

        analyse( Function );

        console.log( '- - - - - - - - - - - - - - - - - - - - -' );

        analyse( Function.prototype );

    </script>

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<body>
    
</body>
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